Process of strengthening clay hydraulic pipe, vases, crockery-ware, &amp;c.



No. 697,642. Patented Apr. l5, I902.

' L. MILLET. v PBOCESS OF STRENGTHENINECLAY HYDRAULIC RIPE, VASES, GBOCKEBY WARE, 6w.

(Application filed Hair. 9, 1901.)

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UNITED STATES PATENT OFFICE.

LIBERTY MILLET, OF I-IAGERMAN, IDAHO.

PROCESS OF STRENGTHENING CLAY HYDRAULIC PIPE, VASES, CROCKERY-WARE, dc.

SBEGIFIGATIQN forming part of Letters Patent No. 697,642, dated April 15, 1902. I Application filed March 9, 1901- Serial No. 50,519. (No model.)

To all whom, it may concern:

Be it known that I, LIBERTY MILLET, a citizen of the United States, residing at Hagerman, in the county of Lincoln and State of Idaho, have invented anew and Improved Method of Strengthening Pipe and other Pottery Articles; and I attain this object by the means and in the manner illustrated in the accompanying drawings; and I hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, making the same a part of this specification.

Figure 1 represents a section of pipe wound with Wire or iron rods before the glazing is applied. ais the wire. Fig. 2 represents section of pipe, showing grooves prepared for the reception of the wire or rod, B being the groove. Fig. 3 shows section of pipe after glazing, it then being complete. 6 is the wire. F is the glazing. Fig. 4 shows. end of pipe with manner of fastening wire or rod to same, 0 being wire or rod. D D are the grooves in which the wire or rod is seated. Fig. 5 shows a pottery article when completed. G G represent the wire around the same.

After glazing is applied, the Wire being entirely covered, the article presents a hard and smooth outside and inside surface.

This invention is especially valuable in this that it gives pipe and pottery articles sufficient strength to bear handling without breakage and to resist almost any pressure from without or within, thus giving pipe and pottery articles a durability beyond anything now in use. The pipe will possess advantages over any now in use in this that it will be unequaled in cheapness and of perfect cleanliness. It also has another advantage over iron or wooden pipe. Water may be kept out of it when desired for any length of time, and it will be ready for immediate use. It is a well-known fact that wooden pipe not in use after having once contained water will shrink, which causes it to leak and often be- The contraction or expansion of iron or steel pipe is such that being out of use for some time it becomes necessary to relay and repair the same before be' ing again used. Various methods have been devised for preserving pipe and extendingits usefulness; but none of them have proven Very successful. With the best care and treatment possible hydraulic pipe at best is of short duration. My purpose is to obviate these objections and place 011 the market an all-purpose pipe at a cost below anything now known. I accomplish these objects in the following manner: Pipe of the required size is first molded from clay suited to the purpose. It is then placed in a kiln and burned to the proper consistency. Then it is placed in amachine suited to the purpose, and agroove is cut around and around the pipe for the reception of the wire or iron rod, as the case may be. Then a coat of glazingis applied both inside and outside, when it is ready for use.

The glazing on the inside prevents any sub:- stance from adhering to the pipe and keeps water always pure and clean.

The glazing I apply with a brush; but any method of glazing pottery articles may be used to advantage.

The purpose of wrapping Wire around the outside of pottery articles is to strengthen the same, permitting them to be handled with little danger of breakage.

The purpose of wrapping wire around the pipe is'to cause it to resist great pressure. If additional strength is needed, the sections of pipe or pottery articles may be grooved and wired lengthwise.

The purpose of glazing pottery articles and pipe is to prevent rust or erosion, contraction, and expansion of the wire or iron rods. The difficulty heretofore has been that the wire or iron bands used have been left exposed, with no protection except paint or coal-tar, and expansion and contraction soon loosens the wrapping and it no longer answers the purpose. Then, again, the Wire and bands are subject to rust or erosion, and in this man ner soon become injured, and the pipe is no longer serviceable. All these objections I propose to obviate.

What I claim as my invention, and desire to secure by Letters Patent, is

The method of strengthening pipe and other pottery articles by first burning the named to this specification in the presence of same to the proper consistency, then groovtwo subscribing witnesses. in the same around the outside, then wrapping Wire or iron rods tightlyin the grooves, LIBERTSL MILLET' 5 then applying the glazing to form a hard and Witnesses:

smooth surface. HENRY A. SEOOR,

In testimony whereof I have signed my J. P. MCMEEKIN. 

